1999 Audi S8 vs. 2006 BMW X5
To start off, 2006 BMW X5 is newer by 7 year(s). Which means there will be less support and parts availability for 1999 Audi S8. In addition, the cost of maintenance, including insurance, on 1999 Audi S8 would be higher. At 4,799 cc (8 cylinders), 2006 BMW X5 is equipped with a bigger engine. In terms of performance, 2006 BMW X5 (355 HP @ 6200 RPM) has 20 more horse power than 1999 Audi S8. (335 HP @ 7000 RPM) In normal driving conditions, 2006 BMW X5 should accelerate faster than 1999 Audi S8. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 472 kg more than 1999 Audi S8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2006 BMW X5 (490 Nm @ 3600 RPM) has 159 more torque (in Nm) than 1999 Audi S8. (331 Nm @ 3400 RPM). This means 2006 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi S8. 2006 BMW X5 has automatic transmission and 1999 Audi S8 has manual transmission. 1999 Audi S8 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 Audi S8 | 2006 BMW X5 | |
| Make | Audi | BMW |
| Model | S8 | X5 |
| Year Released | 1999 | 2006 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 4799 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 335 HP | 355 HP |
| Engine RPM | 7000 RPM | 6200 RPM |
| Torque | 331 Nm | 490 Nm |
| Torque RPM | 3400 RPM | 3600 RPM |
| Engine Bore Size | 84.5 mm | 93 mm |
| Engine Stroke Size | 93 mm | 88.3 mm |
| Top Speed | 250 km/hour | 246 km/hour |
| Acceleration 0-100mph | 5.4 seconds | 6.1 seconds |
| Drive Type | AWD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1730 kg | 2202 kg |
| Vehicle Length | 5040 mm | 4670 mm |
| Vehicle Width | 1890 mm | 1880 mm |
| Vehicle Height | 1420 mm | 1710 mm |
| Wheelbase Size | 2890 mm | 2830 mm |
| Fuel Consumption Overall | 13.7 L/100km | 13.5 L/100km |
| Fuel Tank Capacity | 90 L | 93 L |
